wilczek



May 19,V 1931., A. WILCZEK PUNCTURING APPARATUS Filed Dec. 20, 1929 2 Sheets-Sheer?l l May 19, 1931. L. A. wlLczEK 1,806,434

PUNCTURING- APPARATUS Filed DeC 20, 1929 2 Sheets-Sheet Patented May 19, 1931 PATENT OFFICE LUDWIG A. WILCZEK, OF NEW YORK, N'. Y.

PUNCTURING APPARATUS Application filed December 20, 1929. Serial No. 415,402,

This invention relates to the method and means for puncturing or perforating fabrics and other materials, and has for one of its objects the provision of means adapted to perforate material of any desired width and thus overcome the deficiencies and limitations of the present day perforating machines which are limited to accommodate materials of substantially narrow widths.

Another object of the invention is to provide a device of the character referred to that will prevent the buckling of the material during the process of perforation.

A further object of the invention is to provide a device of this character with a master die plate or matrix adapted to rest upon the material to be perforated, and means for pressing the said plate against the material when the perforating pins are withdrawn from same after perforation, to prevent the said material from lifting up or buckling.

A still further object of the invention is to provide a device of the character referred to with a punch or pin holding` or carrying plate and meansassociated therewith to limit the downward movement of the said plate, the said means also being adapted to raise the plate to its normal position' after the perforating action.

` Still another object of the invention is to provide a device of this nature adapted to perforate any desired material at an angle thereto.

A still further object of the invention is to provide a device of the nature referred to, adapted to form a raised portion around the perforations.

Another object is to produce a device of the character described in which the maximum simplicity of construction and operation is secured.

Other objects and advantages will appear as the nature of the improvements is better understood, the invention consisting substantially in the novel arrangement and co-relation of parts herein fully described, and illustrated in the accompanying drawings, wherein similar reference characters are used to describe corresponding parts throughout the several views, and then finally pointed out and specifically defined and indicated in the appended claims.

The disclosure made the basis of exemplifying the present inventive concept suggests a practical embodiment thereof, but the invention not to be restricted to the exact details of this disclosure, and the latter, therefore, is to be understood from an illustrative, rather than a restrictive standpoint.

The inventive idea involved is capable of receiving a variety of mechanical expressions, one of which, for the purpose of illustration, is shown in the accompanying drawings, in which:-

Figure 1 is a side View in elevation partly in section of my improved perfor-ating device.

Figure 2 is an end view thereof partly in section.

Figure 3 is an end view showing the arrangement of the beams and separating meinbers.

Figure 4: is a plan View thereof with parts broken away.

Figure 5 is an end view partly in section of a modified form of my invention, and

Figure 6 is a detail view showing how the raisedportion is formed.

Referring to the drawings in detail 10 and 11 indicate a pair of beam like members, the beam 10 being placed and secured in place beneath the flooring 12 of a room, and the beam 11 above the said flooring and spaced from the lower beam 10 by tubular separating members 13 near each end of the said beams. The said beams are secured or tied together by means of bolts 14, and nuts 15, the said bolts passing through the beams 10 and 11, and through the tubular members 13.

In the present instance l have shown my invention as adapted for perforating screen sheets for talking movies. It will readily be understood that as such screens vary in size from a comparatively small or narrow sheet to a substantially wide sheet, the present day perfor-ating machines which are limited to perforating materials of thirty-six inches or thereabout are not adapted for perforating screen sheets which are ten or more feet wide.

To overcome this deficiency I have provided a structure comprising the upper and lower beams 10 and 11 in which the innermost tubular members 13 may be spaced apart a distance suioient to permit a very wide screen sheet 18 to pass therebetween. A pad 19 made of felt or any other suitable material is placed on perforating device which comprisesI a die plate or matrix 2O which is provi-ded with a plurality of holes or openings 21 throughout :substantially the entire length" andV width vao thereof. Screw threaded Studsgoi'posts 22 arel secured to the said matrix plate at orfnear thefou'r cornersthereofand act aeg-nidos for a plate 23 containing headed piercing or,

for every opening ingtllieplateQQ? These pins 24:.11oi21i1al1y ostoD-Cl'paltvey ntou'io plato 20. eoverfplate 25 secured tothey pinl 'containing I Jlatef.E prevent the pins 2 4V from riding out of the said plateqf, during thepiercing @p eration. 1A, pairJof bolts, or screws 2,6a1e' threaded,throughithe plates. 23and25 and are proyidedwiththumb pieces or heads and with nutsZS. e A .o Y

4Ih'e'operatien olf the, device is as follows:

A kstrip of material 18of any desired and .length isA passed. between the innermost tubular., member 13 and located softliat.A it

covers at least the entire Widthof themember y10. The perforating device is thenwplaped onthe sheet V` 18 near Ione `side 4edge thereof and f aplair` of pressure exerting Jacks, are, placed.

onth'e device, between'the 4top or cover plate Qoaadthe lieder Surface ofthe toi? boem 11, the jacks Q9 are thenoperated topitess. the pin plate, down, to pierce the sheet. The o lower ends of these-'news or,V studs 256:.limittlie.down.-k wfard. movement of the pinv carryingfplate theliolos pio-rood the i'aok aro; romovool 4 uppermost position of thesaid plate. After and the; 'screws 26, are, screwed against, the

iii'atigiiiplate() to raise the pinfcarrying plate y upper position." The operatonns then com#Y and... ivithdiaWtlie pin-sfrom thescreemat, the s'ametnne hplldingfthe saidniatrix against the acre assistA in raising the pin= caiiying? plater to its pleted throughtlie 'entire' widthgof the mag terial, after whichV tli'enfew areaA of suchmaterial isldrawnthrough to present, anew sur,- fa'cetobe operated upon. f

Irwin behemoth@ du'emtho fag@ that, Yi

employ poi-.ntodrno for nofolfltng, lio ma iscut away from the screen sheet, but

terial will be forced,'down into the felt` paid 1x9; and. produce semi-spherieal cup like projectipnsQvfsee Figyz); y

' yIn ligure)5. I havesliowna modiiizedform sheet andzprevent there: o f 'v`` enthe pinsare withdrawn. .Springsl or` wedge like base 35 upon whichI place the felt pad 19. In this form of my linvention the openings 21 in the matrix are drilled at an angle to the surface of thev said plate and the pins 24- are` at thesame angle in the nail carrying,- plate 23, thus w'hen the pins are pressed through thesoijeen material, the openings and oiiialilo pioiotons Will; be atari al1-slew the screen material. This I consider very important-as in this way I am enabled to provide. a screen sheet for talking movies which will permit the maximum amount of sound t0 ithro'uglithe screenwith the minimum ampunt of loss of light andy projection surface.

Erom the foregoing, it willzbe see-n that I have provided means for` perforating mater,

aielo, otrora largo Width, they perfor-ations.

passing either vertically or angularly-,thiough 1. In, a, perforating ,device` of the nature described, a perforated die. plate, extending.

posts .secured thereto, a second plate slidalgly mounted on the. said= posts, piercingpinsin tho Soooodziolafo normally oxtondioa'iiaetvar into 7the.perforationsofE 'the die plate,z a cover plateonthe second mentioned plate.overlyingE thoioioroiI-ia Pins, an'd'apair ofooltowotbloadl ed, into ,the rin Carmina? plato adapted@ limitVV the, downward movement-of 'the said plate and, also toraisezthe saide plate by screw,- ing same,` against the die plate.after thepiercing.operation.,ispeiformed. l

2f Inl a perforating device of the.. naturegolef scribed, an upper anddower pressure. resist; ille. linenlbelf,` a Collapsible ioorioiaa mecha* nis'in 'supported on, the ylower pressure resistm'ember, the n. said piercing4 mechanism Vthe material, the' said.` perforated; materia# 8.5

cured,thereto,` a second plate mount- ,ed on'thesad.posts, piercingpins in theseeond g mentioned vvplate in.r operative, relation, to. the perfoi'ationsin the dieplate, acoverplate overlying Ythe piercing pins, a pair .caff screws oailool by tho p'rifoarifying platogadantcdio limit tliedoaviiivaid'movement of 'thel plate and also'toraise the said plateby screw,- me".Seltsam-insidie Clioplataato-thofpioroing. operation is performech and pressure means a'daptedto :be inserted between theup;` per vpressure resisting member andthe pieroT iiiginechanism. Y, i

In testimony whereof I; hereuntoafl; my

LUDWIG AL Y Sisaai'lirof oiffoylfnroioaivliofoin lomnl'oyaa lnoliood lilo 

